Documents disponibles écrits par cet auteur

Efficient and accurate method for calculating the stochastic seismic response of a nonproportionally damped structure / Wei Guo in Journal of structural engineering, Vol. 139 N° 3 (Mars 2013) 

Public ISBD [article]  in Journal of structural engineering > Vol. 139 N° 3 (Mars 2013) . - pp. 472–477 Titre : Efficient and accurate method for calculating the stochastic seismic response of a nonproportionally damped structure Type de document : texte imprimé Auteurs : Wei Guo, Auteur ; Zhi-wu Yu, Auteur ; Zhen Guo, Auteur Année de publication : 2013 Article en page(s) : pp. 472–477 Note générale : structural engineering Langues : Anglais (eng) Mots-clés : damping;  excitation;  seismic  effects;  stochastic  processes;  structural  response Résumé : In the case of nonproportionally damped structures, the forced decoupling method is often adopted in approximate analysis. However, it generally cannot satisfy the precision requirements for practical engineering. Taking this into account, methods to calculate the stochastic seismic response of nonproportionally damped structures are systematically studied in this paper. Based on the pseudoexcitation method, an efficient and accurate iteration method with the advantages of high computational efficiency and iteration convergence is also proposed. This new method is preferred for practical engineering because of real expressions. Finally, a numerical example is carried out to verify the properties and advantages of the proposed method. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000655 [article] Efficient and accurate method for calculating the stochastic seismic response of a nonproportionally damped structure [texte imprimé] / Wei Guo, Auteur ; Zhi-wu Yu, Auteur ; Zhen Guo, Auteur . - 2013 . - pp. 472–477. structural engineering Langues : Anglais (eng) in Journal of structural engineering > Vol. 139 N° 3 (Mars 2013) . - pp. 472–477 Mots-clés : damping;  excitation;  seismic  effects;  stochastic  processes;  structural  response Résumé : In the case of nonproportionally damped structures, the forced decoupling method is often adopted in approximate analysis. However, it generally cannot satisfy the precision requirements for practical engineering. Taking this into account, methods to calculate the stochastic seismic response of nonproportionally damped structures are systematically studied in this paper. Based on the pseudoexcitation method, an efficient and accurate iteration method with the advantages of high computational efficiency and iteration convergence is also proposed. This new method is preferred for practical engineering because of real expressions. Finally, a numerical example is carried out to verify the properties and advantages of the proposed method. En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000655

Roles of hydrogen donors and organic selenides in inhibiting solid deposits from thermal stressing of n-dodecane and chinese RP-3 jet fuel / Wei Guo in Industrial & engineering chemistry research, Vol. 48 N° 18 (Septembre 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 18 (Septembre 2009) . - pp. 8320–8327 Titre : Roles of hydrogen donors and organic selenides in inhibiting solid deposits from thermal stressing of n-dodecane and chinese RP-3 jet fuel Type de document : texte imprimé Auteurs : Wei Guo, Auteur ; Xiangwen Zhang, Auteur ; Guozhu Liu, Auteur Année de publication : 2010 Article en page(s) : pp. 8320–8327 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Hydrocarbon  fuels  Hydrogen  donors  Organic  selenides Résumé : Use of hydrocarbon fuels as coolants for future high-Mach aircraft is challenged by the formation of carbonaceous deposits during thermal stressing at high temperatures (>500 °C). Three hydrogen donors, tetralin (THN), α-tetralone (THNone), and benzyl alcohol (BzOH), and two organic selenides, diphenyl selenide (Ph2Se) and diphenyl diselenide (Ph2Se2), as well as their mixtures, are selected as thermally stable additives to inhibit the deposition from the thermal stressing of n-dodecane and Chinese RP-3 (No. 3 jet fuel). It is found that the amount of solid deposits from thermal stressing of RP-3 is reduced by 77.0% with the additive of Ph2Se2/THN/THNone. The carbonaceous solid is further characterized using temperature-programmed oxidation (TPO), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). It is revealed that hydrogen donor THN/THNone and organic selenides possibly reduce the carbon deposits through retarding the thermal cracking rate, blocking surface catalysis, and depressing reactivity of sulfur with the surface metals, as well as their synergistic effect. The morphologies of deposits also dramatically change after adding organic selenides or hydrogen donors. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900735c [article] Roles of hydrogen donors and organic selenides in inhibiting solid deposits from thermal stressing of n-dodecane and chinese RP-3 jet fuel [texte imprimé] / Wei Guo, Auteur ; Xiangwen Zhang, Auteur ; Guozhu Liu, Auteur . - 2010 . - pp. 8320–8327. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 18 (Septembre 2009) . - pp. 8320–8327 Mots-clés : Hydrocarbon  fuels  Hydrogen  donors  Organic  selenides Résumé : Use of hydrocarbon fuels as coolants for future high-Mach aircraft is challenged by the formation of carbonaceous deposits during thermal stressing at high temperatures (>500 °C). Three hydrogen donors, tetralin (THN), α-tetralone (THNone), and benzyl alcohol (BzOH), and two organic selenides, diphenyl selenide (Ph2Se) and diphenyl diselenide (Ph2Se2), as well as their mixtures, are selected as thermally stable additives to inhibit the deposition from the thermal stressing of n-dodecane and Chinese RP-3 (No. 3 jet fuel). It is found that the amount of solid deposits from thermal stressing of RP-3 is reduced by 77.0% with the additive of Ph2Se2/THN/THNone. The carbonaceous solid is further characterized using temperature-programmed oxidation (TPO), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). It is revealed that hydrogen donor THN/THNone and organic selenides possibly reduce the carbon deposits through retarding the thermal cracking rate, blocking surface catalysis, and depressing reactivity of sulfur with the surface metals, as well as their synergistic effect. The morphologies of deposits also dramatically change after adding organic selenides or hydrogen donors. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900735c